" What if conscious experience is managed by each module? Lose a module to injury or stroke, and the consciousness that accompanies that module is gone, too. Remember: patients with hemi-neglect aren’t conscious of one-half of space because the module that processes that information is no longer working. Or, if the modules responsible for locating oneself in space are not being integrated properly, conscious experience is deeply affected, and one ends up with the feeling that someone else is there just over your shoulder. Or, take people with Urbach-Wiethe disease, which leads to deterioration of the amygdalae: they no longer experience the emotion of fear. One "

― Michael S. Gazzaniga , The Consciousness Instinct: Unraveling the Mystery of How the Brain Makes the Mind